Nissan Pathfinder. Manual - part 680

COMPRESSOR

HA-31

< REMOVAL AND INSTALLATION >

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

1. Discharge the refrigerant. Refer to 

HA-23, "Recycle Refrigerant"

.

2. Partially remove the front edge of the front fender protector (RH). Refer to 

EXT-28, "FENDER PROTEC-

TOR : Removal and Installation"

.

3. Remove the bolts that retain the oil cooler line brackets to the engine block and reposition the oil cooler

line aside. Refer to 

LU-15, "Removal and Installation"

.

4. Remove the drive belt. Refer to 

EM-12, "Removal and Installation"

.

5. Disconnect the harness connector from the compressor.
6. Disconnect the low-pressure flexible hose from the compressor.

CAUTION:

Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

7. Disconnect the high-pressure flexible hose from the compressor.
8. Remove the compressor bolts, then remove the compressor.

INSTALLATION

1. Install the compressor and compressor bolts. Tighten the com-

pressor bolts to specification and in the sequence as shown.

CAUTION:

• Tighten the compressor bolts in the specified sequence.

2. Connect the harness connector to the compressor.
3. Connect the high-pressure flexible hose to the compressor.
4. Connect the low-pressure flexible hose to the compressor.
5. Install the drive belt. Refer to 

EM-12, "Removal and Installation"

.

6. Install the bolts that retain the oil cooler line brackets to the engine block. Refer to 

LU-15, "Removal and

Installation"

.

7. Install the front fender protector (RH). Refer to 

EXT-28, "FENDER PROTECTOR : Removal and Installa-

tion"

.

8. Recharge the refrigerant. Refer to 

HA-23, "Charge Refrigerant"

.

CAUTION:

• Check the tension of the drive belt after installing the compressor. Refer to 

EM-12, "Checking Drive

Belt"

.

• Do not reuse O-rings.

• Apply A/C oil to new O-rings for installation.

• After charging refrigerant, check for leaks. Refer to 

HA-21, "Leak Test"

. 

MAGNET CLUTCH
MAGNET CLUTCH : Removal and Installation of Compressor Clutch

INFOID:0000000009176741

REMOVAL

1. Remove the compressor. Refer to 

HA-30, "COMPRESSOR : Removal and Installation"

.

2. Remove the center bolt by holding the clutch disc steady using a suitable tool.
3. Remove the clutch disc and shims.

CAUTION:

Retain all the shims for installation.

ALIIA0545ZZ

HA-32

< REMOVAL AND INSTALLATION >

COMPRESSOR

4. Remove the snap ring using a suitable tool as shown.

5. Remove the pulley assembly using a suitable tool (A) as shown.

CAUTION:

To prevent deformation of the pulley groove, the puller

claws should be hooked under (not into) the pulley groove.

6. Disconnect the magnet coil harness connector.
7. Remove the three magnet coil screws using a suitable tool as

shown and remove.

INSPECTION AFTER REMOVAL

(1): Shim

(2): Snap ring

(3): Clutch disc

(4): Pulley

(5): Magnet coil

(A): Center bolt

(B): Magnet coil screws

Clutch Disc

If the contact surface shows signs of damage due to excessive heat, replace as necessary.

Pulley

Check the appearance of the pulley assembly. If the contact surface of the pulley shows signs of excessive

grooving, replace as necessary. The contact surfaces of the pulley assembly should be cleaned with a suitable

solvent before installation.

Magnet Coil

Check the magnet coil for a loose connection or cracked insulation. Replace as necessary.

RHA072C

AWIIA1285ZZ

WHA212

WJIA2296E

COMPRESSOR

HA-33

< REMOVAL AND INSTALLATION >

C

D

E

F

G

H

J

K

L

M

A

B

HA

N

O

P

INSTALLATION

1. Install the magnet coil by aligning the magnet coil pin (A) with

the hole (B) in the compressor front head as shown, then install

the magnet coil screws.

: Rear

CAUTION:

• Be sure to align the magnet coil pin with the hole in the

compressor front head.

2. Connect the magnet coil harness connector.
3. Install the pulley assembly using tool and a wrench as shown,

then install the snap ring using a suitable tool.

4. Install the clutch disc (1) on the drive shaft, together with all of

the original shims (2) using a suitable tool (A).

5. Install the center bolt using a suitable tool.
6. Install the compressor. Refer to 

HA-30, "COMPRESSOR : Removal and Installation"

.

INSPECTION AFTER INSTALLATION

Check the clearance (B) all the way around between the clutch disc

(1) and pulley (2) using a suitable tool (A) as shown.

If the specified clearance (B) is not obtained, replace the adjusting

shims and recheck the clearance (B) as shown.

BREAK-IN OPERATION

When replacing compressor clutch assembly, always conduct the break-in operation. This is done by engag-

ing and disengaging the clutch about 30 times. Break-in operation raises the level of transmitted torque.

ALIIA0389ZZ

Tool number

: — (J-38873-A)

WJIA1016E

WJIA2297E

Clutch disc-to-pulley clearance (B)

: 0.3 - 0.6 mm 
(0.01 - 0.02 in)

AWIIA1698ZZ

HA-34

< REMOVAL AND INSTALLATION >

COOLER PIPE AND HOSE

COOLER PIPE AND HOSE

Exploded View

INFOID:0000000009176742

HIGH-PRESSURE AND LOW-PRESSURE PIPE
HIGH-PRESSURE AND LOW-PRESSURE PIPE : Removal and Installation

INFOID:0000000009176743

REMOVAL

1. Discharge the refrigerant. Refer to 

HA-23, "Recycle Refrigerant"

.

2. Remove core support cover. Refer to 

EXT-16, "Exploded View"

.

3. Remove front air duct. Refer to 

EM-24, "Removal and Installation"

.

4. Remove front under cover. Refer to 

EXT-30, "Removal and Installation"

.

5. Remove the cowl top extension. Refer to 

EXT-25, "Exploded View"

.

6. Remove the high-pressure and low-pressure pipe bolt from the expansion valve.

CAUTION:

Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry of air.

7. Remove the high-pressure and low-pressure pipe bolt from the underfloor rear high-pressure and low-

pressure A/C pipes.

8. Remove the high-pressure and low-pressure pipe bolt from the low-pressure flexible hose and high-pres-

sure pipe.

9. Remove the high-pressure and low-pressure pipe.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Do not reuse O-rings.

• Apply A/C oil to the O-rings of the high-pressure and low-pressure pipe for installation.

• After charging refrigerant, check for leaks. Refer to 

HA-21, "Leak Test"

.

LOW-PRESSURE FLEXIBLE HOSE

1.

Front heating and cooling unit assembly 2.

High-pressure and low-pressure pipe

3.

Low-pressure service port

4.

Low-pressure flexible hose

5.

Compressor

6.

High-pressure flexible hose

7.

Condenser pipe assembly

8.

Condenser (includes liquid tank)

9.

High-pressure service port

10. High-pressure pipe

ALIIA0548ZZ